Pi is the ratio of the circumference of a circle to its diameter. #PiApproximationDay is celebrated every year on 22 July. The fraction 22/7 is an approximate value of #Pi & it is for this reason that this day is commemorated on July 22. As the #Numerator 22 represents the #Date, while the #denominator 7 represents the #Month. #PiDay #ravindrabharathigroupofschools